Molding apparatus.



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P. J. MQGUIRE. MOLDING APPARATUS. APPLICATION FILED JAN. 31, 1902.

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No. 721,727. PATENTED MAR. 3, 1903.

P. J. McG'UIR-B.

MOLDING APPARATUS.

APPLICATION I'ILED JAN. 31, 1902.

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WITNESSES:

PATENTED MAR. 3, 1903.

P. J. MoGUIRE. MOLDING APPARATUS. APPLICATION. FILED JAN. 31, 1902. m MODE-L. 5 sums-$11227: 5,

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UNITED STATES PATENT OFFICE.

PETER J. MCGUIRE, or BLAI svIL PENNSYLVANIA, ASSIGNOR TO THE CHAMPION SANITARY ENAMEL wARE 00., A CORPORATION OF PENN- sYLvANIA.

MOLDING APPARATUS.

:PEGIFICATION forming partof Letters Patent No. 721,727, dated March 3, 1903. Application filed January 31,1902. Serial No. 91,952. (No model.)

To aZZ whom i may concern: same vertically. When the pattern is ad- Be it known that I, PETER J. MCGUIRE, a justed to its proper elevation, the same is citizen of the United States, residing at Blairsfirmly united, by screws 44;, extending through ville, in the countyofIndiana and State of the flange into said frame, to said frame, and 55 Pennsylvania, have invented a new and usethe space about the flange filled with Babbitt ful Improvement in Molding-Apparatus, of metal or other material virtually making said A which improvement the following is a specififrame and pattern of'one piece. A drag-flask cation. 40 of plain unbarred character having around- This invention relates to improvements in about shape corresponding to that of the 60 [O molding apparatus for bath-tubs. tub-pattern is mounted upon said frame and The invention is adapted for use in connecisprovided at its sides and ends with guidetion with molding-flasks for which I have filed boxes 9. At the ends and sides of the frame application for Letters Patent of even date are arranged the upwardly-extended tongues herewith, Serial No. 91,951. or guide members 7, which are adapted to en- 65 I5 The invention has for its object the progage the adjustable contact-screws 8 of the vision'of a practical non-rapping molding apflask-guide 9. This frame is further provided paratus of two parts for forming the cope and with openings 10 to receive the flask-pins 11, drag portions of the mold. said openings being considerably greater in The invention consists in the novel comdiameter than said pins to permit the flask 7o bination and arrangement of parts as hereinbeing adjusted to the proper position by said after set forth. screws 8.

In the accompanying drawingsI have illus-. In connection with this apparatus a lift trated my invention in various ways, in mechanism for raising the apparatus from whichthe flask or mold after the same has been 75 Figure I is a side view of the drag-formrammed up and turned over is employed. ing portion of the apparatus, showing the The mechanism herein shown consists of two flask fitted thereto. Fig. II is alongitudinal transverse shafts 12, mounted in suitable sectional view through the same. Fig. III is bearings 13, which shafts carry cranks 14:,

a plan view of the frame portion of the dragconnected to one another by rods 15, said 80 forming apparatus. Fig. IV is a side view of shafts being further provided with cams 16 the cope-forming portion of the apparatus, .to engage the vertical lifting-pins 17. The showing the flask fitted thereto. 'Fig. V is a' lifting of the mold is effected by applying a longitudinal sectional view through the same. lever or wrench to the end of said shafts and Fig. VI isa plan view of the frame portion of I turning the same one quarter --,revolution. 85

said drag-forming apparatus. Fig. VII is a The turning of said shafts actuates' the pins transverse sectional view through the cope- 17, which pins, being in engagement with the forming apparatus and flask. Fig. VIII is a flask, elevates the apparatus from the flask transverse sectional view through the dragand mold sufficient distance to relieve said forming apparatus and flask. pattern therefrom. 9o

40 Further referring to said drawings for a The apparatus forformiug the cope portion detailed description of said apparatus, the of the mold consists'of a frame 18, having a numeral 1 designates a box-frame having flangel9around the upper edgethereofiwhich formed about its upper edge the flange 2, flange is provided with a groove 20; which flange is provided with a groove 3. The The tub-pattern 21 for forming the outer or 9 5 tub-pattern 4 for forming the drag or hollow cope portion of the mold is arranged upon portion of the mold is arranged within said said frame with its flange portion 21 extendframe with its flanged portion 4 extending ing into said groove. Set-screws 22 extend into said groove. Extending up through the up through the flange of said frame into enflange portion of said frame into said grooves gagement with the pattern-flange to adjust I00 are the set-screws 5, which are adapted to enthe same vertically, and when the same has gage the flange of said pattern and adjust the been properly adjusted the groove is filled with Babbitt metal or other material and the pattern permanently fixed to said frame by screws 42, extending through the flange into saidframe. Acope-flask41 ofsufficientdepth to extend above the pattern and give the required thickness of sand thereover is mounted upon said frame, which flask tapers and has a roundabout shape corresponding to the tub-pattern and at the ends and sides is provided with the downwardly-extended tongues 26. At the ends and sides of said frame are arranged the guide boxes or receptacles 24, which boxes are provided with adjustable contact-screws 25 to engage with the guide members or tongues 26 of the flask, said frame being further provided with pins 27 to extend through openings in said flask. This cope molding or forming apparatus is also provided with a lift mechanism similar to that of the drag-forming apparatus, consisting of shafts 28, cranks 29, and cams 30, fixed to said shafts, rods 31,connecting said cranks, and lift-pins 32 to engage said cams. The pattern parts after being adjusted vertically on both parts of the apparatus to give the required thickness of metal in the tub-bottom and united with said frames, as previously stated, each form practically a single piece or pattern part,

with a flange or parting surface extending beyond the dividing-line of the tub-flange of sufficient breadth to support the flask, with means thereupon to engage the guide members of the flask to prevent lateral or longitudinal movement or displacement of said flask.

In the manufacture of cast bath-tubs it has heretofore been considered impossible to mold the same without vibrating or rapping the pattern to relieve or loosen the same from the mold previous to lifting the same therefrom, the contention being that suction of suflicient force would be created between the mold and pattern when separated as to pull the sand from and destroy the mold, owing to the great depth and extent of surface contained in such bodies. Practical demonstrations made with the apparatus herein described have proven such holdings to be erroneous, as the patterns will freely relieve themselves from the molds without such vibrating or rapping thereof.

By the employment of adjustable guide members in connection with the apparatus and flasks therefor I am enabled to adjust said flasks laterally and longitudinally in relation to the patterns toincrease or decrease the thickness of metal at the sides and ends of the tub and adjust the tub-patterns vertically by screws 5 and 22 to increase or decrease the thickness of metal in the bottom of the tub to establish equality of expansion and contraction at all points of the tub-surface, and when the proper adjustment has been determined the patterns are made integral with the frames, as previously described. In cast tubs of this character the surface inclinations and curvatures at various surface portions dilfer greatly, and consequently the expansion and contraction would be unequal, under which conditions the enamel would crack when applied thereto and render the tub unfit as a standard sanitary article; but by the use of this apparatus it is possible by the pattern and flask adjustments to establish uniformity of expansion and contraction with little practice, and when such is established it may be maintained, with the result that each and every tub thereafter cast will be a like counterpart in thickness and weight as well as equality of expansion and contraction.

By the use of this apparatus I am enabled to produce perfect cast tubs, every one being exact in thickness, weight, &c., which is not possible when the patterns are rapped or vibrated. Furthermore, the labor and cost of production is considerably reduced.

Having thus fully shown and described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a molding apparatus for bath-tubs or other like hollow receptacles, a stationary support carrying the pattern and having suflicient surface extending thereabont to support a flask, a flask mounted thereupon, and means to vertically adjust said pattern wholly or either end or side thereof to establish the elevation which the same shall thereafter permanently maintain relative to said support and flask to give the desired thickness of metal in the bottom of the receptacle cast therein or equalize the expansion and contraction over said bottom surface.

2. In a molding apparatus for bath-tubs or other like hollow articles, a stationary supporting-body carrying the pattern, a flask mounted thereon, means to vertically adjust said pattern relative to the flask to establish the fixed elevation which the same shall thereafter maintain to give the proper metal thickness or equalization of expansion and contraction over the bottom surfaces of the articles to be cast from said pattern, and members to longitudinally or laterally adjust said flask to establish the proper position which the same shall thereafter assume to give the proper metal thickness or equalization of expansion and contraction at the ends or side walls of said cast articles.

3. In a molding apparatus for bath-tubs or other like hollow articles, a stationary supporting-body carrying the pattern, a flask mounted thereon, means to vertically adjust said pattern relative to the flask to establish the fixed elevation which the same shall thereafter maintain to give the proper metal thickness or equalization of expansion and contraction over the bottom surfaces of the articles to be cast from said pattern, and adjustable registering members arranged upon said flask and body at their meeting surfaces adapted to longitudinally or laterally adjust said flask to establish the proper registering position which the same shall thereafter as- ICC ' the ends and side walls of said cast articles.

sume to give the proper metal thickness or equalization of expansion and contraction at to establish the proper registering position which the same shall thereafter assume to give the proper metal thickness or equalization of expansion and contraction at the ends and side walls of said cast articles, and guide members to assist said flask to its registering position.

5. In a molding apparatus for bath-tubs or other like hollow articles, a stationary supporting-body carrying the pattern, a flask mounted thereon, means to vertically adjust said pattern wholly or either end or side thereof relative torthe flask to establish the fixed elevation which the same shall thereafter maintain to give the proper metal thickness or equalization of expansion and contraction over the bottom surfaces of the articles to be cast from said pattern, and adjustable registering members arranged upon said 'flask and body at their meeting surfaces adapted to longitudinally or laterally adjust said flask to establish the proper registering position which the same shall thereafter assume to give the proper metal thickness or equalization of expansion and contraction at the ends or side walls of said cast articles.

6. In a molding apparatus for bath-tubs or other like hollow articles, a stationary supporting-body carrying the pattern, a flask mounted thereon, means to vertically adjust said pattern wholly or either end or side thereof relative to the flask to establish the fixed elevation which the same shall thereafter maintain to give the proper metal thicknessor equalization of expansion and contraction over the bottom surfaces of the articles to be cast from said pattern, adjustable registering members arranged upon said flask and body 'at their meeting surfaces adapted to longitumembers arranged upon the ends and sides of said body and flask, said members adapted to permit the flask being longitudinally adjusted by the side members without disturbing its lateral registering position or laterally by the end members without disturbing its longitudinal registering position. I

8. In a molding apparatus for bath-tubs or other like hollow articles, a stationary supporting-body carrying the pattern, a flask mounted thereon,adjustable registering members arranged upon the ends and sides of said body and flask, and guide members to assist said flask to its registering position, said adjustable members adapted to permit the flask being longitudinally adjusted by the side members Without disturbing its lateral registering position or laterally by the end members without disturbing its longitudinal registering position.

9. In a molding apparatus for bath-tubs or other like hollow receptacles, a stationary support carrying the pattern and having sufficient surface extending thereabout to support a flask, a flask mounted thereupon, and a plurality of independently-operatin'g adjusting members carried by'said support and engaging said pattern whereby the elevation of said pattern may be varied Wholly or either end or side thereof relative to said support and flask to give the desired thickness of metal in the bottom of the receptacle cast therein or equalize the expansion and contraction over said bottom surface.

10. In a molding apparatus for bath-tubs or other like hollow receptacles having an outwardly-extended rim around the edge thereof, a stationary support having a groove in its surface to receive therim of said pattern with sufficient surface projecting therebeyond to support a flask, a pattern of the character set forth mounted on said support,means to vertically adjust said pattern Wholly or either end or side thereof relative to said support, and a filling between said groove and pattern-rim.

11. In a molding apparatus for bath-tubs or other like hollow receptacles having an outwardly-extended rim around the edge thereof, a stationary support having a groove in its surface to receive the rim of the pattern with sufficient surface projecting therebeyond to support a flask, a pattern of the char acter set forth mounted on said support, a

flask mounted thereon, means to vertically adjust said pattern wholly or either end or side-thereof relative to said support and flask to give the desired thickness of metal in or equalize the expansion and contraction over the bottom of the receptacle cast therein, a filling between said groove and pattern-rim, and adjustable registering members arranged at the meeting edges of said support and flask adapted to longitudinally or laterally adjust the registerable position of said flask upon said support relative to said pattern to give the proper thickness of metalin or equalize the expansion and contraction over the ends or side walls of the receptacle cast therein.

12. In a molding apparatus for bath-tubs or other like hollow receptacles having an outwardly-extended rim around the edge thereof, a stationary support having a groove in its surface to receive the rim of the pattern with sufficient surface projecting therebeyond to support a flask, a pattern of the charro acter set forth mounted on said support, a

flask mounted thereon, means to vertically adjust said pattern wholly or either end or side thereof relative to said support and flask to give the desired thickness of metal in or equalize the expansion and contraction over the bottom of the receptacle cast therein; a filling between said groove and pattern-rim,

scribing witnesses.

PETER J. MCGUIRE. In presence of CHAS. KERLER, J r., RICHARD S. HARRISON. 

